Given the recurrence relation:

[tex]\[ a(n+1) = 5a(n) \][/tex]

with the initial condition:

[tex]\[ a(1) = 2 \][/tex]

for [tex]\( n \geq 1 \)[/tex].



Answer :

Certainly! Let's solve this problem step by step.

We are given a recursive sequence defined by \( a(n+1) = 5a(n) \) with the initial term \( a(1) = 2 \). Our task is to find the first five terms of this sequence.

### Step-by-Step Solution:

Step 1: Identify the Initial Term

The initial term of the sequence is given by:
[tex]\[ a(1) = 2 \][/tex]

Step 2: Apply the Recursive Relation to Find Subsequent Terms

The recursive relation tells us how to find the next term in the sequence from the current term. Specifically, each term is 5 times the previous term.
[tex]\[ a(n+1) = 5a(n) \][/tex]

Step 3: Calculate the Next Term

We'll start with the initial term and apply the recursive relation in succession.

- For \( n = 1 \):
[tex]\[ a(2) = 5a(1) = 5 \cdot 2 = 10 \][/tex]

- For \( n = 2 \):
[tex]\[ a(3) = 5a(2) = 5 \cdot 10 = 50 \][/tex]

- For \( n = 3 \):
[tex]\[ a(4) = 5a(3) = 5 \cdot 50 = 250 \][/tex]

- For \( n = 4 \):
[tex]\[ a(5) = 5a(4) = 5 \cdot 250 = 1250 \][/tex]

### Summary of the First Five Terms

We can now summarize the first five terms of the sequence:
[tex]\[ a(1) = 2 \][/tex]
[tex]\[ a(2) = 10 \][/tex]
[tex]\[ a(3) = 50 \][/tex]
[tex]\[ a(4) = 250 \][/tex]
[tex]\[ a(5) = 1250 \][/tex]

Thus, the sequence starts with the terms: \( [2, 10, 50, 250, 1250] \).

This concludes our detailed, step-by-step solution!

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